Tube Rolling w/Crack

[adeep42]

The Garage 6SN7 adaptor worked for me. I really enjoy the Crack plus Speedball with the 6SN7.

[Crackling]

Glad to hear that. I'm already very satisfied with mine with speedball and Tung-Sol 5998 but if upgrading my input tube improves the sound even further, then why the heck not!

[kill_surf_city]

I've been tube rolling for a while and I finally find my perfect combo. Both RCA tubes. 6AS7G and 12BH7. Both are grey plates but they have a very incredible synergy. I'm running with Speedball and the 12BH7 has been my go to with or without Speedball when comparing to the RCA clear tops. I've tried black plates of the RCA 6AS7G and even the Tung Sol 5998 and both were incredibly microphonic. The combo I have is pure bliss with the Speedball. If I'm gonna be totally honest, black/grey plate doesn't really matter. The Crack w/Speedball sounds incredible no matter what tube you put in it. I've tried both and the difference is unnoticeable. The amp just sounds incredible. Maybe I just got lucky with my RCA tubes, but IMO don't waste your money on the 5998 Tung Sol tube if you're thinking about it.

[Crackling]

That's good info. Thank you! I got lucky when I bought my Crack, the gentleman I got it from had a Tung-Sol 5998 and he threw it in as part of the whole package, which was great. Re the 12BH7, did you have to make adjustments since it's on the "kinda drop-in" compatible list of tubes?

[kill_surf_city]

That's good info. Thank you! I got lucky when I bought my Crack, the gentleman I got it from had a Tung-Sol 5998 and he threw it in as part of the whole package, which was great. Re the 12BH7, did you have to make adjustments since it's on the "kinda drop-in" compatible list of tubes?

nope. Adding the Speedball was the only adjustment I've made.

[Doc B.]

"Perfect combo" suggestions should also mention the source and the type of headphones used to be useful in the general scheme of things.

[Crackling]

Great point, Doc. Mine for now is the stock input tube plus the Tung-Sol 5998 fed from my pc to Khadas Tone Board and using this set up my most favorite pair of cans among all the ones I've tested (TH-X00, HD 6XX, HD 650, Fostex T60RP, Argon t50rp MK3, DT 1990 Pro, and more) has got go be the DT 1990 Pro. Nothing comes even close to them.

[Foscolo]

Hi everyone,

It's my first post on the forum, as a happy new owner of a Crack+Speedball! The gentleman I bought it from included the two tubes shown in the attached pictures. I'm having a hard time identifying them. Can anyone help?
I hope this is the right thread for this question.

Thank you!
Tommaso

[Tom-s]

General Electric 6080
Sylvania 12au7

[Foscolo]

General Electric 6080
Sylvania 12au7

Thank you!

[Joe Garfield]

Can anyone identify these tubes? I was thinking GE 6080, maybe Raytheon 12AU7 but have doubts. Just trying to figure out what I have so I can make changes based off sound profile.
Thank you.

https://www.head-fi.org/threads/trying-to-decide-crack-dv-ld-mkii-valhalla.928356/post-15785828

[cddc]

Can anyone identify these tubes? I was thinking GE 6080, maybe Raytheon 12AU7 but have doubts. Just trying to figure out what I have so I can make changes based off sound profile.
Thank you.

https://www.head-fi.org/threads/trying-to-decide-crack-dv-ld-mkii-valhalla.928356/post-15785828

GE 6080
Sylvania 12AU7, rebranded as Baldwin.

[Joe Garfield]

Is the consensus pretty much to not bother with tube rolling before, or if, installing speedball? It sounds like some people think tubes make almost no difference with Speedball.

I've got a couple of power tubes to play with but don't know if or when I should start thinking about the input tube.

[oguinn]

If you have tubes sitting around already the easiest way to see if they’ll make a difference is to try them. I’ve seen some difference with different 6080s, but it’s up to personal tastes and ears.

[Paul Birkeland]

the consensus

That's not necessarily a word that fits well in this thread